Rear - BMW M4 GT4 User Manual

BMW M4 GT4 // CHASSIS

REAR

FUE L LE V EL
The amount of fuel in the fuel tank. Tank capacity is 104 L (27.5 g). Adjustable in 1 L (0.26 g) increments.
ARB BL ADES
Increasing the ARB assembly stiffness will increase the roll stiffness of the rear suspension, resulting in less body roll but
increasing mechanical oversteer. This can also cause the car to "take a set" more quickly at initial turn-in. Conversely, reducing the
ARB assembly stiffness will soften the suspension in roll, increasing body roll but decreasing mechanical oversteer. This can result
in a less-responsive feel from the rear especially in transient movements, but grip across the rear axle will increase. Three ARB
settings are available ranging from 1 'soft' to 3 'stiff'.
W ING SE T T I NG
The wing setting refers to the relative angle of attack of the rear wing, this is an aerodynamic device which has a significant impact
upon the total downforce (and drag!) produced by the car as well as shifting the aerodynamic balance of the car rearwards with
increasing angle. Increasing the rear wing angle results in more total cornering grip capability in medium to high speed corners
but will also result in a reduction of straight line speed. Rear wing angle should be adjusted in conjunction with front and rear ride
heights, specifically the difference between front and rear ride heights known as 'rake'. To retain the same overall aerodynamic
balance it is necessary to increase the rake of the car when increasing the rear wing angle.
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BM W M4 G T4 // US ER M A N UA L